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CDOT Warns of 16% Jump in Wildlife Collisions After Time Change

Animals’ internal clocks do not shift with ours, boosting overlap between peak movement and evening commutes.

Overview

  • CDOT and safety advocates are urging extra caution in the week after clocks roll back, citing Environment Colorado’s finding of a 16% post-change rise in deer crashes.
  • State records show at least 54,189 vehicle–wildlife collisions from 2010 through 2024, resulting in 48 vehicle-occupant deaths and more than 5,000 injuries.
  • More than 3,600 collisions were recorded last year, with county hotspots identified in La Plata and Douglas.
  • Officials say properly placed crossings paired with fencing can reduce crashes by up to 90%, with 75 crossings in service and a major I-25 Greenland overpass expected later this year.
  • Drivers are advised to slow down, use headlights, increase following distance, watch for reflective eyes at road edges, and consider public transit during dusk hours.